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Brenière Simone Frédérique, Condori E. W., Buitrago R., Sosa L. F., Macedo C. L., Barnabé Christian. (2017). Molecular identification of wild triatomines of the genus Rhodnius in the Bolivian Amazon : strategy and current difficulties. Infection Genetics and Evolution, 51, 1-9. ISSN 1567-1348

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Lien direct chez l'éditeur doi:10.1016/j.meegid.2017.03.002

Titre
Molecular identification of wild triatomines of the genus Rhodnius in the Bolivian Amazon : strategy and current difficulties
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000402444100001
AuteursBrenière Simone Frédérique, Condori E. W., Buitrago R., Sosa L. F., Macedo C. L., Barnabé Christian.
SourceInfection Genetics and Evolution, 2017, 51, p. 1-9. ISSN 1567-1348
RésuméThe Amazon region has recently been considered as endemic in Latin America. In Bolivia, the vast Amazon region is undergoing considerable human migrations and substantial anthropization of the environment, potentially renewing the danger of establishing the transmission of Chagas disease. The cases of human oral contamination occurring in 2010 in the town of Guayaramerin provided reasons to intensify research. As a result, the goal of this study was to characterize the species of sylvatic triatomines circulating in the surroundings of Yucumo (Beni, Bolivia), a small Amazonian city at the foot of the Andes between the capital (La Paz) and Trinidad the largest city of Beni. The triatomine captures were performed with mice-baited adhesive traps mostly settled in palm trees in forest fragments and pastures. Species were identified by morphological observation, dissection of genitalia, and sequencing of three mitochondrial gene fragments and one nuclear fragment. Molecular analysis was based on (i) the identity score of the haplotypes with GenBank sequences through the BLAST algorithm and (ii) construction of phylogenetic trees. Thirty-four triatomines, all belonging to the Rhodnius genus, of which two were adult males, were captured in palm trees in forest fragments and pastures (overall infestation rate, 12.3%). The morphology of the phallic structures in the two males confirmed the R. stali species. For the other specimens, after molecular sequencing, only one specimen was identified with confidence as belonging to Rhodnius robustus, the others belonged to one of the species of the Rhodnius pictipes complex, probably Rhodnius stali. The two species, R. robustus and R. stali, had previously been reported in the Alto Beni region (edge of the Amazon region), but not yet in the Beni department situated in the Amazon region. Furthermore, the difficulties of molecular characterization of closely related species within the three complexes of the genus Rhodnius are highlighted and discussed.
Plan de classementEntomologie médicale / Parasitologie / Virologie [052] ; Sciences fondamentales / Techniques d'analyse et de recherche [020]
Descr. géo.BOLIVIE ; AMAZONIE
LocalisationFonds IRD [F B010070092]
Identifiant IRDfdi:010070092
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010070092

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